1 /* search.c - ldap backend search function */
4 * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
5 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 /* This is an altered version */
9 * Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
11 * Permission is granted to anyone to use this software for any purpose
12 * on any computer system, and to alter it and redistribute it, subject
13 * to the following restrictions:
15 * 1. The author is not responsible for the consequences of use of this
16 * software, no matter how awful, even if they arise from flaws in it.
18 * 2. The origin of this software must not be misrepresented, either by
19 * explicit claim or by omission. Since few users ever read sources,
20 * credits should appear in the documentation.
22 * 3. Altered versions must be plainly marked as such, and must not be
23 * misrepresented as being the original software. Since few users
24 * ever read sources, credits should appear in the documentation.
26 * 4. This notice may not be removed or altered.
30 * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
32 * This software is being modified by Pierangelo Masarati.
33 * The previously reported conditions apply to the modified code as well.
34 * Changes in the original code are highlighted where required.
35 * Credits for the original code go to the author, Howard Chu.
42 #include <ac/socket.h>
43 #include <ac/string.h>
47 #include "back-ldap.h"
48 #undef ldap_debug /* silence a warning in ldap-int.h */
49 #include "../../../libraries/libldap/ldap-int.h"
51 static int ldap_send_entry( Backend *be, Operation *op, struct ldapconn *lc,
52 LDAPMessage *e, AttributeName *attrs, int attrsonly );
66 struct berval *filterstr,
71 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
75 int count, rc = 0, msgid, sres = LDAP_SUCCESS;
76 char *match = NULL, *err = NULL;
77 char *mapped_filter = NULL, **mapped_attrs = NULL;
81 struct berval mfilter = { 0, NULL };
82 #endif /* ENABLE_REWRITE */
83 struct slap_limits_set *limit = NULL;
86 lc = ldap_back_getconn(li, conn, op);
91 /* if not root, get appropriate limits */
92 if ( be_isroot( be, &op->o_ndn ) ) {
95 ( void ) get_limits( be, &op->o_ndn, &limit );
98 /* if no time limit requested, rely on remote server limits */
99 /* if requested limit higher than hard limit, abort */
100 if ( !isroot && tlimit > limit->lms_t_hard ) {
101 /* no hard limit means use soft instead */
102 if ( limit->lms_t_hard == 0 && tlimit > limit->lms_t_soft ) {
103 tlimit = limit->lms_t_soft;
105 /* positive hard limit means abort */
106 } else if ( limit->lms_t_hard > 0 ) {
107 send_search_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
108 NULL, NULL, NULL, NULL, 0 );
113 /* negative hard limit means no limit */
116 /* if no size limit requested, rely on remote server limits */
117 /* if requested limit higher than hard limit, abort */
118 if ( !isroot && slimit > limit->lms_s_hard ) {
119 /* no hard limit means use soft instead */
120 if ( limit->lms_s_hard == 0 && slimit > limit->lms_s_soft ) {
121 slimit = limit->lms_s_soft;
123 /* positive hard limit means abort */
124 } else if ( limit->lms_s_hard > 0 ) {
125 send_search_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
126 NULL, NULL, NULL, NULL, 0 );
131 /* negative hard limit means no limit */
135 ldap_set_option( lc->ld, LDAP_OPT_DEREF, (void *)&deref);
137 ldap_set_option( lc->ld, LDAP_OPT_TIMELIMIT, (void *)&tlimit);
139 ldap_set_option( lc->ld, LDAP_OPT_SIZELIMIT, (void *)&slimit);
143 * controls are set in ldap_back_dobind()
145 * FIXME: in case of values return filter, we might want
146 * to map attrs and maybe rewrite value
148 if ( !ldap_back_dobind( lc, op ) ) {
153 * Rewrite the search base, if required
155 #ifdef ENABLE_REWRITE
156 switch ( rewrite_session( li->rwinfo, "searchBase",
157 base->bv_val, conn, &mbase.bv_val ) ) {
158 case REWRITE_REGEXEC_OK:
159 if ( mbase.bv_val == NULL ) {
163 LDAP_LOG( BACK_LDAP, DETAIL1,
164 "[rw] searchBase: \"%s\" -> \"%s\"\n",
165 base->bv_val, mbase.bv_val, 0 );
166 #else /* !NEW_LOGGING */
167 Debug( LDAP_DEBUG_ARGS, "rw> searchBase: \"%s\" -> \"%s\"\n%s",
168 base->bv_val, mbase.bv_val, "" );
169 #endif /* !NEW_LOGGING */
172 case REWRITE_REGEXEC_UNWILLING:
173 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
174 NULL, "Unwilling to perform", NULL, NULL );
178 case REWRITE_REGEXEC_ERR:
179 send_ldap_result( conn, op, LDAP_OTHER,
180 NULL, "Operations error", NULL, NULL );
186 * Rewrite the search filter, if required
188 switch ( rewrite_session( li->rwinfo, "searchFilter",
189 filterstr->bv_val, conn, &mfilter.bv_val ) ) {
190 case REWRITE_REGEXEC_OK:
191 if ( mfilter.bv_val == NULL || mfilter.bv_val[0] == '\0') {
192 if ( mfilter.bv_val != NULL ) {
193 free( mfilter.bv_val );
195 mfilter = *filterstr;
197 mfilter.bv_len = strlen( mfilter.bv_val );
201 LDAP_LOG( BACK_LDAP, DETAIL1,
202 "[rw] searchFilter: \"%s\" -> \"%s\"\n",
203 filterstr->bv_val, mfilter.bv_val, 0 );
204 #else /* !NEW_LOGGING */
205 Debug( LDAP_DEBUG_ARGS,
206 "rw> searchFilter: \"%s\" -> \"%s\"\n%s",
207 filterstr->bv_val, mfilter.bv_val, "" );
208 #endif /* !NEW_LOGGING */
211 case REWRITE_REGEXEC_UNWILLING:
212 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
213 NULL, "Unwilling to perform", NULL, NULL );
214 case REWRITE_REGEXEC_ERR:
218 #else /* !ENABLE_REWRITE */
219 ldap_back_dn_massage( li, base, &mbase, 0, 1 );
220 #endif /* !ENABLE_REWRITE */
222 mapped_filter = ldap_back_map_filter(&li->at_map, &li->oc_map,
223 #ifdef ENABLE_REWRITE
225 #else /* !ENABLE_REWRITE */
227 #endif /* !ENABLE_REWRITE */
229 if ( mapped_filter == NULL ) {
230 #ifdef ENABLE_REWRITE
231 mapped_filter = mfilter.bv_val;
232 #else /* !ENABLE_REWRITE */
233 mapped_filter = filterstr->bv_val;
234 #endif /* !ENABLE_REWRITE */
237 #ifdef ENABLE_REWRITE
238 if ( mfilter.bv_val != filterstr->bv_val ) {
239 free( mfilter.bv_val );
241 #endif /* ENABLE_REWRITE */
243 mapped_attrs = ldap_back_map_attrs(&li->at_map, attrs, 0);
244 if ( mapped_attrs == NULL && attrs) {
245 for (count=0; attrs[count].an_name.bv_val; count++);
246 mapped_attrs = ch_malloc( (count+1) * sizeof(char *));
247 for (count=0; attrs[count].an_name.bv_val; count++) {
248 mapped_attrs[count] = attrs[count].an_name.bv_val;
250 mapped_attrs[count] = NULL;
253 if ((msgid = ldap_search(lc->ld, mbase.bv_val, scope, mapped_filter, mapped_attrs,
257 rc = ldap_back_op_result(lc, op);
261 /* We pull apart the ber result, stuff it into a slapd entry, and
262 * let send_search_entry stuff it back into ber format. Slow & ugly,
263 * but this is necessary for version matching, and for ACL processing.
268 rc = ldap_result(lc->ld, msgid, 0, &tv, &res))
270 /* check for abandon */
272 ldap_abandon(lc->ld, msgid);
279 ldap_pvt_thread_yield();
280 } else if (rc == LDAP_RES_SEARCH_ENTRY) {
281 e = ldap_first_entry(lc->ld,res);
282 if ( ldap_send_entry(be, op, lc, e, attrs, attrsonly) == LDAP_SUCCESS ) {
287 sres = ldap_result2error(lc->ld, res, 1);
288 sres = ldap_back_map_result(sres);
289 ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &err);
290 ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
299 #ifdef ENABLE_REWRITE
301 * Rewrite the matched portion of the search base, if required
303 if ( match != NULL ) {
304 switch ( rewrite_session( li->rwinfo, "matchedDn",
305 match, conn, &mmatch ) ) {
306 case REWRITE_REGEXEC_OK:
307 if ( mmatch == NULL ) {
308 mmatch = ( char * )match;
311 LDAP_LOG( BACK_LDAP, DETAIL1,
312 "[rw] matchedDn:" " \"%s\" -> \"%s\"\n", match, mmatch, 0 );
313 #else /* !NEW_LOGGING */
314 Debug( LDAP_DEBUG_ARGS, "rw> matchedDn:"
315 " \"%s\" -> \"%s\"\n%s",
317 #endif /* !NEW_LOGGING */
320 case REWRITE_REGEXEC_UNWILLING:
321 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
322 NULL, "Unwilling to perform",
325 case REWRITE_REGEXEC_ERR:
331 send_search_result( conn, op, sres,
332 mmatch, err, NULL, NULL, count );
334 #else /* !ENABLE_REWRITE */
335 send_search_result( conn, op, sres,
336 match, err, NULL, NULL, count );
337 #endif /* !ENABLE_REWRITE */
341 #ifdef ENABLE_REWRITE
342 if ( mmatch != match ) {
345 #endif /* ENABLE_REWRITE */
351 if ( mapped_attrs ) {
352 ch_free( mapped_attrs );
354 if ( mapped_filter != filterstr->bv_val ) {
355 ch_free( mapped_filter );
357 if ( mbase.bv_val != base->bv_val ) {
358 free( mbase.bv_val );
370 AttributeName *attrs,
374 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
375 struct berval a, mapped;
377 BerElement ber = *e->lm_ber;
378 Attribute *attr, **attrp;
379 struct berval dummy = { 0, NULL };
380 struct berval *bv, bdn;
383 if ( ber_scanf( &ber, "{m{", &bdn ) == LBER_ERROR ) {
384 return LDAP_DECODING_ERROR;
386 #ifdef ENABLE_REWRITE
389 * Rewrite the dn of the result, if needed
391 switch ( rewrite_session( li->rwinfo, "searchResult",
392 bdn.bv_val, lc->conn, &ent.e_name.bv_val ) ) {
393 case REWRITE_REGEXEC_OK:
394 if ( ent.e_name.bv_val == NULL ) {
398 LDAP_LOG( BACK_LDAP, DETAIL1,
399 "[rw] searchResult: \"%s\"" " -> \"%s\"\n",
400 bdn.bv_val, ent.e_dn, 0 );
401 #else /* !NEW_LOGGING */
402 Debug( LDAP_DEBUG_ARGS, "rw> searchResult: \"%s\""
403 " -> \"%s\"\n%s", bdn.bv_val, ent.e_dn, "" );
404 #endif /* !NEW_LOGGING */
405 ent.e_name.bv_len = strlen( ent.e_name.bv_val );
409 case REWRITE_REGEXEC_ERR:
410 case REWRITE_REGEXEC_UNWILLING:
413 #else /* !ENABLE_REWRITE */
414 ldap_back_dn_massage( li, &bdn, &ent.e_name, 0, 0 );
415 #endif /* !ENABLE_REWRITE */
418 * Note: this may fail if the target host(s) schema differs
419 * from the one known to the meta, and a DN with unknown
420 * attributes is returned.
422 * FIXME: should we log anything, or delegate to dnNormalize2?
424 if ( dnNormalize2( NULL, &ent.e_name, &ent.e_nname ) != LDAP_SUCCESS ) {
425 return LDAP_INVALID_DN_SYNTAX;
431 attrp = &ent.e_attrs;
433 while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
434 ldap_back_map(&li->at_map, &a, &mapped, 1);
435 if (mapped.bv_val == NULL)
437 attr = (Attribute *)ch_malloc( sizeof(Attribute) );
443 if (slap_bv2ad(&mapped, &attr->a_desc, &text) != LDAP_SUCCESS) {
444 if (slap_bv2undef_ad(&mapped, &attr->a_desc, &text)
447 LDAP_LOG( BACK_LDAP, DETAIL1,
448 "slap_bv2undef_ad(%s): %s\n", mapped.bv_val, text, 0 );
449 #else /* !NEW_LOGGING */
450 Debug( LDAP_DEBUG_ANY,
451 "slap_bv2undef_ad(%s): "
452 "%s\n%s", mapped.bv_val, text, "" );
453 #endif /* !NEW_LOGGING */
459 /* no subschemaSubentry */
460 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
465 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
466 || attr->a_vals == NULL ) {
468 * Note: attr->a_vals can be null when using
469 * values result filter
471 attr->a_vals = &dummy;
473 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
474 || attr->a_desc == slap_schema.si_ad_structuralObjectClass ) {
477 for ( last = 0; attr->a_vals[last].bv_val; last++ ) ;
478 for ( i = 0, bv = attr->a_vals; bv->bv_val; bv++, i++ ) {
479 ldap_back_map(&li->oc_map, bv, &mapped, 1);
480 if (mapped.bv_val == NULL) {
481 LBER_FREE(bv->bv_val);
485 *bv = attr->a_vals[last];
486 attr->a_vals[last].bv_val = NULL;
488 } else if ( mapped.bv_val != bv->bv_val ) {
490 * FIXME: after LBER_FREEing
491 * the value is replaced by
494 LBER_FREE(bv->bv_val);
495 ber_dupbv( bv, &mapped );
500 * It is necessary to try to rewrite attributes with
501 * dn syntax because they might be used in ACLs as
502 * members of groups; since ACLs are applied to the
503 * rewritten stuff, no dn-based subject clause could
504 * be used at the ldap backend side (see
505 * http://www.OpenLDAP.org/faq/data/cache/452.html)
506 * The problem can be overcome by moving the dn-based
507 * ACLs to the target directory server, and letting
508 * everything pass thru the ldap backend.
510 } else if ( strcmp( attr->a_desc->ad_type->sat_syntax->ssyn_oid,
511 SLAPD_DN_SYNTAX ) == 0 ) {
513 for ( i = 0, bv = attr->a_vals; bv->bv_val; bv++, i++ ) {
514 struct berval newval;
516 #ifdef ENABLE_REWRITE
517 switch ( rewrite_session( li->rwinfo,
522 case REWRITE_REGEXEC_OK:
524 if ( newval.bv_val == NULL ) {
527 newval.bv_len = strlen( newval.bv_val );
529 LDAP_LOG( BACK_LDAP, DETAIL1,
530 "[rw] searchResult on attr=%s: \"%s\" -> \"%s\"\n",
531 attr->a_desc->ad_type->sat_cname.bv_val,
532 bv->bv_val, newval.bv_val );
533 #else /* !NEW_LOGGING */
534 Debug( LDAP_DEBUG_ARGS,
535 "rw> searchResult on attr=%s: \"%s\" -> \"%s\"\n",
536 attr->a_desc->ad_type->sat_cname.bv_val,
537 bv->bv_val, newval.bv_val );
538 #endif /* !NEW_LOGGING */
543 case REWRITE_REGEXEC_UNWILLING:
545 case REWRITE_REGEXEC_ERR:
547 * FIXME: better give up,
549 * or leave it untouched?
553 #else /* !ENABLE_REWRITE */
554 ldap_back_dn_massage( li, bv, &newval, 0, 0 );
556 #endif /* !ENABLE_REWRITE */
561 attrp = &attr->a_next;
563 send_search_entry( be, lc->conn, op, &ent, attrs, attrsonly, NULL );
564 while (ent.e_attrs) {
566 ent.e_attrs = attr->a_next;
567 if (attr->a_vals != &dummy)
568 ber_bvarray_free(attr->a_vals);
572 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )